Cortisol saliva tests (6)

This is an important test to help diagnose conditions affecting the adrenal glands.

6 tests included
2 days turnaround



About Cortisol saliva tests (6)

What is cortisol?

Cortisol is a glucocorticoid, a type of steroid hormone, produced by the adrenal glands. It is involved in the stress response, metabolism and immune function. As a result of cortisol’s role in the fight-or-flight (stress) response, it is often referred to as the stress hormone.

Hormones are chemical messengers used by the body to respond to internal and external influences. The activity of hormones must be finely regulated to produce the desired physiological effect. This regulation is typically coordinated by complex interactions between several different hormones.

Cortisol levels are released in greater amounts in the morning and reduce during the day. This pattern is called a diurnal release and is important for the body’s circadian rhythm. This rhythm can be changed or disrupted by sleeping during the day or stress and illness.  

Why take the test?

This test measures the level of cortisol in the saliva upon waking, at 12.00, 14.00, 16.00, 18.00 and at bedtime. It can be used to check the diurnal pattern of cortisol release and to diagnose conditions affecting the adrenal glands.


What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.